Energy-saving and environment-friendly low aspect ratio single screw low temperature desulfurization equipment for reclaimed rubber production line and production method thereof

Abstract

The present application relates to waste regeneration technical field, specifically for the energy saving and environment friendly type low aspect ratio single screw low temperature desulfurization equipment of regenerated rubber production line and its production method, including: machine table, and the protective cover plate connected on the machine table, the protective cover plate is connected with the feed pipe in, the screw is rotatably installed in the feed pipe, the feed pipe is connected with the feeding hopper and the temperature control pipe; sealing disc, sliding seal is connected in the temperature control pipe, the temperature control pipe is provided with cooling control mechanism connected with the sealing disc, the cooling control mechanism is connected with the cooling pipe, the cooling control mechanism can adjust the conduction state of the cooling pipe when the sealing disc moves; desulfurization adjusting mechanism is arranged on the feed pipe and is connected with the screw and the sealing disc, through the cooperation of cooling and raw material conveying rate, the raw material can be ensured to be at the temperature required for desulfurization, so as to prevent desulfurization failure caused by temperature change.

Description

Technical Field

[0001] This invention relates to the field of waste recycling technology, specifically to an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment and its production method for a reclaimed rubber production line. Background Technology

[0002] Reclaimed rubber refers to recycled materials made from waste rubber products that have been processed through crushing, desulfurization, and refining to restore some of their plasticity and viscoelasticity, making them reusable in the production of rubber products. The desulfurization process is a key step in the production of reclaimed rubber. Its principle is to destroy the three-dimensional network structure of vulcanized rubber in waste rubber through the combined action of heat, mechanical shearing, and chemical additives, thereby restoring the plasticity of the vulcanized rubber.

[0003] With increasing demands for energy conservation and environmental protection, low-temperature continuous desulfurization technology has gradually become the mainstream direction for reclaimed rubber production. Existing low-temperature desulfurization involves setting up a cooling water jacket or air-cooling system outside the barrel, and removing excess heat by adjusting the flow rate of the cooling medium.

[0004] However, since the desulfurization reaction is exothermic, when the desulfurization reaction is too vigorous and the cooling capacity reaches its limit, the reaction temperature will exceed the maximum temperature required for desulfurization. Although the desulfurization speed will be faster under this condition, if the product cannot be discharged quickly and its residence time in the high-temperature zone is shortened, the product will be charred and carbonized. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment and its production method for a reclaimed rubber production line, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] Energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production lines includes:

[0008] The machine base and the protective cover plate connected to the machine base. The protective cover plate is connected to the feed pipe, and the feed pipe is rotatably installed with a screw. The feed pipe is connected to the feed hopper and the temperature control pipe.

[0009] Also includes:

[0010] A sealing disc is slidably and sealingly connected inside the temperature control tube. A cooling control mechanism connected to the sealing disc is provided inside the temperature control tube. A cooling pipe is connected to the cooling control mechanism. The cooling control mechanism can adjust the conduction state of the cooling pipe when the sealing disc moves.

[0011] A desulfurization regulating mechanism is installed on the feed pipe and connected to the screw and the sealing disc. The desulfurization regulating mechanism can operate when the conduction of the cooling pipe reaches its maximum to adjust the extrusion rate of the screw.

[0012] As a further aspect of the present invention: the screw is connected to a baffle plate that is evenly distributed, and the baffle plate is formed with a feeding groove that is staggered.

[0013] As a further embodiment of the present invention: the cooling control mechanism includes a fixed plate connected inside the temperature control tube, and a plurality of first arc-shaped grooves are formed on the fixed plate in a circumferentially equidistant manner. The cooling tube is connected to the fixed plate and communicates with the first arc-shaped grooves.

[0014] It also includes a rotating assembly and a conducting assembly disposed on the fixed disk and connected to the sealing disk.

[0015] As a further embodiment of the present invention: the rotating assembly includes a plurality of support sleeves rotatably mounted on the fixed disk and distributed equidistantly around the circumference, the support sleeves having a support rod slidably connected to the sealing disk along their axial direction, the outer circumferential wall of the support rod having a guide groove formed therein, the inner wall of the support sleeve having a limiting block slidably fitted into the guide groove, and a spring installed inside the support sleeve, the two ends of the spring abutting against the support rod and the fixed disk respectively.

[0016] As a further embodiment of the present invention: the conductive assembly includes a conveying pipe connected to the fixed plate and sealed to the support sleeve, and the end of the conveying pipe is formed with a second arc-shaped groove that conducts and cooperates with the first arc-shaped groove.

[0017] As a further embodiment of the present invention: a first transfer pipe and a second transfer pipe are rotatably and sealedly connected to the conveying pipe, and an inlet pipe and a discharge pipe are respectively connected to the first transfer pipe and the second transfer pipe. A conveying hole communicating with the first transfer pipe is formed on the conveying pipe, and the cooling pipe is connected with the second transfer pipe.

[0018] As a further embodiment of the present invention: the desulfurization regulating mechanism includes a plurality of conveying rings connected to the screw and distributed at equal intervals, and a plurality of through grooves distributed at equal intervals around the circumference are formed on the conveying rings;

[0019] It also includes a sealing assembly and a follower assembly disposed on the feed pipe and connected to the through groove and the sealing disc.

[0020] As a further embodiment of the present invention: the sealing assembly includes a push rod that is slidably and sealingly connected to the feed pipe, a sealing block that is sealed and fitted to the through groove is connected to the push rod, a limiting post is also connected to the push rod, and a connecting plate is provided on the limiting post.

[0021] As a further embodiment of the present invention: the follower assembly includes a plurality of follower plates connected to the sealing disc and distributed circumferentially, the follower plates having straight grooves and inclined grooves formed thereon, and the limiting post slidingly engaging with the straight grooves and the inclined grooves.

[0022] The production method of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production lines includes the following steps:

[0023] Step 1: Add the raw material into the feed pipe through the feed hopper, and guide the raw material to flow axially along the feed pipe under the action of the screw;

[0024] Step 2: As the screw rotates, the raw materials are heated, melted, and mixed, and then transported to the desulfurization section. At this time, the temperature of the raw materials can be monitored.

[0025] Step 3: When the temperature rises, it drives the sealing disc to move, thereby adjusting the conduction state of the cooling pipe through the cooling control mechanism, so that the raw material always maintains the desulfurization temperature;

[0026] Step 4: When the temperature exceeds the set value and the cooling pipe reaches its maximum conductivity, the sealing disc drives the desulfurization adjustment mechanism to move, thereby accelerating the screw's conveying rate of raw materials through the desulfurization adjustment mechanism.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention enables the expansion of the gas to push the sealing disc to move when the temperature of the feed pipe rises due to the exothermic reaction of desulfurization. Through the cooperation of the guide groove and the limiting block on the support rod, the linear motion of the sealing disc is converted into the rotational motion of the support sleeve and the conveying pipe. This causes the overlapping area of ​​the second arc groove and the first arc groove to gradually increase, and the flow rate of the coolant to increase accordingly. In this way, the cooling intensity and the desulfurization exothermic rate can be matched in real time, effectively avoiding the problem of continuous product temperature rise caused by desulfurization exothermic reaction, which could lead to scorching and carbonization.

[0029] Before the temperature reaches the highest critical value required for desulfurization, the desulfurization rate is slow. The blocking block maintains maximum obstruction of the channel. When the conveying ring rotates with the screw, the material is repeatedly blocked and passed through by the blocking block in the desulfurization section, which enhances the dispersion and mixing of the material, so that the material is fully desulfurized.

[0030] When the desulfurization temperature continues to rise to the highest critical value, the limiting column enters the inclined trough from the straight trough. Under the guidance of the inclined trough, the limiting column drives the sealing block to move towards each other through the connecting plate and push rod, so that the through area of ​​the conveying ring gradually increases and the extrusion flow rate of the material increases accordingly. In this way, the material flow rate can be accelerated while matching the desulfurization rate, thereby shortening its residence time in the high-temperature desulfurization section, effectively preventing product scorching and carbonization, and ensuring the consistency of the quality of the desulfurized products. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0032] Figure 2 This is a structural schematic diagram from another angle in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0033] Figure 3 This is a schematic diagram of the feed pipe and temperature control pipe in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0034] Figure 4 This is a schematic diagram of the internal structure of the temperature control tube in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0035] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0036] Figure 6 This is a top view schematic diagram of part of the cooling control mechanism and part of the desulfurization adjustment mechanism in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0037] Figure 7 This is a schematic cross-sectional view of the feeding pipe and temperature control pipe in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0038] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point B.

[0039] Figure 9 This is a side view of a portion of the desulfurization adjustment mechanism in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0040] Figure 10 This is a schematic diagram of the cooling control mechanism in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0041] Figure 11 This is a schematic cross-sectional view of the conveying pipe, the first transfer pipe, and the second transfer pipe in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0042] Figure 12 This is an exploded structural diagram of part of the cooling control mechanism in an embodiment of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line.

[0043] In the diagram: 1. Machine base; 2. Protective cover plate; 3. Feed pipe; 301. Feed hopper; 4. Screw; 5. Barrier plate; 501. Feed trough; 6. Conveying ring; 601. Through groove; 7. Temperature control pipe; 8. Sealing plate; 9. Follower plate; 901. Straight groove; 902. Inclined groove; 10. Push rod; 11. Sealing block; 12. Limiting post; 13. Connecting plate; 14. Fixing plate; 1401. First arc groove; 15. Cooling pipe; 16. Support rod; 1601. First horizontal groove; 1602. Spiral groove; 1603. Second horizontal groove; 17. Support sleeve; 1701. Limiting block; 18. Spring; 19. Conveying pipe; 1901. Second arc groove; 1902. Conveying hole; 20. First transfer pipe; 2001. Water inlet pipe; 21. Second transfer pipe; 2101. Discharge pipe. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0046] Please see Figures 1-12 In this embodiment of the invention, the energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line includes:

[0047] Machine base 1, and protective cover plate 2 connected to machine base 1. A feed pipe 3 is connected inside the protective cover plate 2. A screw 4 is rotatably installed inside the feed pipe 3. A feed hopper 301 and a temperature control pipe 7 are connected to the feed pipe 3.

[0048] Also includes:

[0049] A sealing disc 8 is slidably and sealingly connected inside the temperature control tube 7. A cooling control mechanism connected to the sealing disc 8 is provided inside the temperature control tube 7. A cooling pipe 15 is connected to the cooling control mechanism. The cooling control mechanism can adjust the conduction state of the cooling pipe 15 when the sealing disc 8 moves.

[0050] A desulfurization regulating mechanism is installed on the feed pipe 3 and connected to the screw 4 and the sealing disc 8. The desulfurization regulating mechanism can operate when the conduction of the cooling pipe 15 reaches its maximum to regulate the extrusion rate of the screw 4.

[0051] Specifically, in the single-screw low-temperature desulfurization process, to ensure the normal progress of desulfurization, the temperature needs to be controlled within a certain range to guarantee smooth desulfurization. Since the desulfurization reaction is exothermic, the temperature inside the feed pipe 3 will gradually increase as desulfurization proceeds. To prevent product scorching and carbonization due to excessive temperature, cooling is required based on temperature changes. The feed pipe 3 can be divided into a feeding section, a melting and mixing section, a desulfurization section, and an extrusion section. When the raw material is conveyed to the feeding section of the feed pipe 3 through the feed hopper 301, the screw 4 rotates, guiding the raw material towards the melting and mixing section. The raw material will be heated and melted, and then mixed. The raw materials will enter the desulfurization section and undergo desulfurization treatment. During this process, the temperature inside the temperature control tube 7 will change synchronously with the temperature inside the feed tube 3. When the temperature rises, it will drive the sealing disc 8 to move and control the movement of the cooling regulation mechanism to adjust the conduction state of the cooling pipe 15, thereby adjusting the flow rate of the coolant. If the temperature continues to rise and the conduction state of the cooling pipe 15 reaches its maximum, the corresponding desulfurization rate will also accelerate. In order to prevent the product from scorching and carbonizing, it is necessary to accelerate the product flow rate. Under the action of the sealing disc 8, the desulfurization regulation mechanism is driven to move, thereby increasing the product flow rate to further remove heat and complete rapid extrusion.

[0052] Please see Figure 7 , Figure 8 The screw 4 is connected to a baffle plate 5 that is evenly distributed, and the baffle plate 5 has a feeding groove 501 that is staggered.

[0053] It should be noted that the screw 4 can be divided into three sections, corresponding to the feeding section, the melting and mixing section, and the extrusion section, respectively. The baffle plate 5 is located between the feeding section and the melting and mixing section of the screw 4. Since the feeding grooves 501 on the two adjacent baffle plates 5 are staggered, when the screw 4 rotates and controls the raw material to be transported from the feeding section to the melting and mixing section, the raw material is blocked by the baffle plate 5 and can only be discharged through the feeding groove 501. Therefore, at this position, the raw material will be compressed and melted. In this way, it can ensure that the raw material is fully melted and that the raw materials are fully mixed, so as to facilitate the subsequent desulfurization treatment.

[0054] Please see Figures 4-7 , Figures 9-12 The cooling control mechanism includes a fixed disk 14 connected inside the temperature control tube 7. The fixed disk 14 has multiple first arc-shaped grooves 1401 distributed equidistantly around its circumference. The cooling tube 15 is connected to the fixed disk 14 and communicates with the first arc-shaped grooves 1401. It also includes a rotating assembly and a conducting assembly disposed on the fixed disk 14 and connected to the sealing disk 8. The rotating assembly includes multiple support sleeves 17 rotatably mounted on the fixed disk 14 and distributed equidistantly around its circumference. The support sleeves 17 slide axially with respect to the sealing disk. The support rod 16 is connected to the support sleeve 17. The outer circumference of the support rod 16 has a guide groove. The inner wall of the support sleeve 17 is connected to a limiting block 1701 that slides and engages with the guide groove. A spring 18 is installed inside the support sleeve 17. The two ends of the spring 18 abut against the support rod 16 and the fixed plate 14, respectively. The conductive assembly includes a conveying pipe 19 connected to the fixed plate 14 and sealed to the support sleeve 17. The end of the conveying pipe 19 has a second arc groove 1901 that conducts and engages with the first arc groove 1401.

[0055] The conveying pipe 19 is rotatably sealed with a first transfer pipe 20 and a second transfer pipe 21. The first transfer pipe 20 and the second transfer pipe 21 are respectively connected to an inlet pipe 2001 and an outlet pipe 2101. The conveying pipe 19 has a conveying hole 1902 that communicates with the first transfer pipe 20. The cooling pipe 15 is connected to the second transfer pipe 21.

[0056] Please see Figure 11 In detail, both the water inlet pipe 2001 and the discharge pipe 2101 are connected to the storage tank, which stores coolant. The water inlet pipe 2001, the first transfer pipe 20, the conveying pipe 19, the cooling pipe 15, the second transfer pipe 21, and the discharge pipe 2101 are combined to form a circulating cooling channel. By controlling the flow of coolant in the circulating cooling channel, the raw material in the feed pipe 3 is cooled.

[0057] Please see Figure 11The guide groove can be divided into three sections: the first transverse groove 1601, the spiral groove 1602, and the second transverse groove 1603.

[0058] The feed pipe 3 is made of heat-conducting material, which can quickly conduct heat, so that the temperature inside the temperature control pipe 7 tends to be consistent with that of the feed pipe 3. Under the action of the sealing plate 8, the side of the temperature control pipe 7 away from the fixed plate 14 forms a closed chamber, which is filled with expansion gas, which can expand or contract when the temperature changes.

[0059] Please see Figure 4 In the initial state, the temperature inside the feed pipe 3 is low. At this time, the expanding gas is in a contracted state. The sealing disc 8 is located at the end of the stroke away from the fixed disc 14. Under the action of the sealing disc 8, the support rod 16 is located at the end of the stroke away from the support sleeve 17, that is, the distance between the support rod 16 and the fixed disc 14 is the largest. The extension of the spring 18 in its natural state is greater than the maximum distance between the support rod 16 and the fixed disc 14. Therefore, the spring 18 is in a pre-compressed state and always provides the sealing disc 8 with a thrust in the direction away from the fixed disc 14. In this state, the limiting block 1701 is located at the end of the stroke of the second transverse groove 1603 away from the first transverse groove 1601, so that the first arc groove 1401 and the second arc groove 1901 are misaligned.

[0060] When desulfurization is required for the product, the product needs to be heated to the minimum desulfurization temperature in the melting and mixing section, and the product is moved to the desulfurization section by the screw 4. At this time, the temperature in the feed pipe 3 is low, the expansion gas expands slightly, and the sealing plate 8 is controlled to move towards the fixed plate 14, thereby driving the support rod 16 to move and compressing the spring 18, so that the limiting block 1701 slides relative to the support rod 16 along the second transverse groove 1603 and moves towards the direction closer to the first transverse groove 1601. During this process, the angle of the support sleeve 17 will not rotate, and cooling has not yet started.

[0061] As the desulfurization reaction proceeds, the temperature inside the feed pipe 3 gradually rises due to the exothermic reaction. The expanding gas inside the temperature control pipe 7 continues to expand, pushing the sealing disc 8 to continue moving towards the fixed disc 14. The limiting block 1701 disengages from the second transverse groove 1603 and enters the spiral groove 1602. Under the action of the spiral groove 1602, the linear motion of the limiting block 1701 is converted into the rotational motion of the support sleeve 17. The support sleeve 17 drives the conveying pipe 19 to rotate synchronously, so that the second arc-shaped groove 1901 at the end of the conveying pipe 19 gradually overlaps and connects with the first arc-shaped groove 1401 on the fixed disc 14.

[0062] At this time, the inlet pipe 2001 delivers the coolant to the first transfer pipe 20, which then enters the transfer pipe 19 through the transfer hole 1902. The coolant then enters the cooling pipe 15 through the second arc groove 1901 and the first arc groove 1401. After flowing through the cooling pipe 15, the coolant enters the second transfer pipe 21 and finally returns to the storage tank through the discharge pipe 2101, forming a circulating cooling loop to cool and reduce the temperature of the desulfurization product in the feed pipe 3.

[0063] If the temperature continues to rise, the sealing disc 8 continues to move toward the fixed disc 14, and the limiting block 1701 continues to slide along the spiral groove 1602, causing the support sleeve 17 and the conveying pipe 19 to continue to rotate. The overlapping area of ​​the second arc groove 1901 and the first arc groove 1401 gradually increases, and the coolant flow rate increases accordingly, thereby enhancing the cooling effect. In this way, the coolant flow rate automatically increases with the increase of the desulfurization temperature, effectively avoiding the problem of continuous product temperature rise due to desulfurization exothermics, which could lead to product scorching and carbonization.

[0064] Please see Figure 4 , Figure 6 , Figure 7 , Figure 9 , Figure 10 The desulfurization regulating mechanism includes multiple conveying rings 6 connected to the screw 4 and equidistantly distributed, with multiple through grooves 601 equidistantly distributed circumferentially on the conveying rings 6; it also includes a sealing assembly and a follower assembly disposed on the feed pipe 3 and connected to the through grooves 601 and the sealing disc 8. The sealing assembly includes a push rod 10 slidably and sealingly connected to the feed pipe 3, with a sealing block 11 connected to the push rod 10 and sealingly fitted to the through grooves 601. A limit post 12 is also connected to the push rod 10, and a connecting plate 13 is disposed on the limit post 12. The follower assembly includes multiple follower plates 9 connected to the sealing disc 8 and equidistantly distributed circumferentially, with straight grooves 901 and inclined grooves 902 formed on the follower plates 9. The limit post 12 slidably engages with the straight grooves 901 and inclined grooves 902.

[0065] Please see Figure 10 Furthermore, the length of the straight groove 901, combined with the second transverse groove 1603 and the spiral groove 1602, is equal to the length of the support rod 16 in the axial direction. In the initial state, the temperature inside the feed pipe 3 is low, and the sealing disc 8 is located at the end of the stroke away from the fixed disc 14. In this state, the limiting post 12, which cooperates with the straight groove 901 and the inclined groove 902, is located at the end of the stroke of the straight groove 901 away from the inclined groove 902. The limiting post 12 will control multiple blocking blocks 11 to be located at the end of the stroke near the inner wall of the feed pipe 3 through the connecting plate 13. That is, the blocking amount of the blocking block 11 on the through groove 601 is the largest, so that the conduction size of the through groove 601 is the smallest.

[0066] When the product needs to be desulfurized, as the desulfurization exothermic reaction proceeds, the temperature inside the feed pipe 3 gradually increases, and the sealing disc 8 moves toward the direction closer to the fixed disc 14, causing the limiting block 1701 to slide along the second transverse groove 1603 and enter the spiral groove 1602, driving the support sleeve 17 to rotate, and controlling the second arc groove 1901 to gradually connect with the first arc groove 1401 through the conveying pipe 19, starting the cooling cycle to cool the product.

[0067] At the same time, the movement of the sealing disc 8 drives the follower plate 9 to move synchronously, and the limiting post 12 slides relative to the follower plate 9 along the straight groove 901. During this stage, the position of the blocking block 11 remains unchanged, and the conduction size of the through groove 601 remains at its minimum. As the screw 4 drives the conveying ring 6 to rotate synchronously and continuously, with the cooperation of the blocking block 11 and the conveying ring 6, the product is repeatedly blocked and passed through in the desulfurization section, which enhances the mixing effect and is conducive to the full progress of the desulfurization reaction.

[0068] If the temperature continues to rise and reaches the highest temperature critical value, the limiting block 1701 moves to the position where the spiral groove 1602 and the first horizontal groove 1601 are connected. At this time, the first arc groove 1401 and the second arc groove 1901 are completely overlapped, and the cooling effect of the cooling pipe 15 on the product reaches the maximum. At the same time, the limiting post 12 moves to the position where the straight groove 901 and the inclined groove 902 are connected. As the sealing disc 8 continues to move, the limiting block 1701 enters the first horizontal groove 1601 and locks the angle of the conveying pipe 19, so that the flow rate of the coolant in the cooling pipe 15 is kept to the maximum. The limiting post 12 enters the inclined groove 902. Under the guidance of the inclined surface of the inclined groove 902, the limiting post 12 drives the connecting plate 13 and multiple push rods 10 to move synchronously toward each other.

[0069] The push rod 10 drives the sealing block 11 to move towards each other. Since the through groove 601 is set with an inverted trapezoidal opening, when the sealing block 11 moves, its overlapping area with the through groove 601 gradually decreases, which makes the conduction area of ​​the through groove 601 gradually increase. The increase in the conduction area of ​​the through groove 601 reduces the flow resistance of the product in the desulfurization section, and the extrusion flow rate of the product increases accordingly. In this way, when the temperature is too high and the desulfurization rate is fast, the product can be quickly passed through the desulfurization section and completed extrusion by increasing the product flow rate. This effectively prevents the product from scorching and carbonization caused by staying in the desulfurization section for too long, and ensures the consistency of the quality of the desulfurized product.

[0070] The production method of an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production lines includes the following steps:

[0071] Step 1: The raw material is added into the feed pipe 3 through the feed hopper 301, and guided along the axial direction of the feed pipe 3 by the screw 4.

[0072] Step 2: As the screw 4 rotates, the raw materials are heated, melted, and mixed, and then transported to the desulfurization section. At this time, the temperature of the raw materials can be monitored.

[0073] Step 3: When the temperature rises, it drives the sealing disc 8 to move, thereby adjusting the conduction state of the cooling pipe 15 through the cooling control mechanism, so that the raw material always maintains the desulfurization temperature.

[0074] Step 4: When the temperature exceeds the set value and the conduction state of the cooling pipe 15 reaches its maximum, the sealing disc 8 drives the desulfurization adjustment mechanism to move, so as to accelerate the conveying rate of the raw materials by the screw 4 through the desulfurization adjustment mechanism.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production lines, including: The machine base, and a protective cover plate connected to the machine base, wherein a feed pipe is connected inside the protective cover plate, a screw is rotatably installed inside the feed pipe, and a feed hopper and a temperature control pipe are connected to the feed pipe; characterized in that it further includes: The sealing disc is slidably sealed inside the temperature control tube. The temperature control tube is equipped with a cooling control mechanism connected to the sealing disc. A cooling pipe is connected to the cooling control mechanism. The cooling control mechanism can adjust the conduction state of the cooling pipe when the sealing disc moves. The desulfurization regulating mechanism is installed on the feed pipe and connected to the screw and the sealing disc. The desulfurization regulating mechanism can be activated when the cooling pipe conductivity reaches its maximum to adjust the extrusion rate of the screw. The desulfurization regulating mechanism includes multiple conveying rings connected to the screw and distributed at equal intervals, and multiple through grooves distributed at equal intervals around the circumference are formed on the conveying rings; It also includes a sealing assembly and a follower assembly disposed on the feed pipe and connected to the through groove and the sealing plate; the sealing assembly includes a push rod that is slidably and sealingly connected to the feed pipe, a sealing block that is sealed and fitted to the through groove is connected to the push rod, a limit post is also connected to the push rod, and a connecting plate is disposed on the limit post; the follower assembly includes multiple follower plates that are connected to the sealing plate and are circumferentially and equally distributed, straight grooves and inclined grooves are formed on the follower plates, and the limit post is slidably engaged with the straight grooves and inclined grooves; When the product needs to be desulfurized, the temperature inside the feed pipe gradually increases as the desulfurization reaction is exothermic. The sealing disc moves, which drives the follower plate to move synchronously. The limiting column slides along the straight groove relative to the follower plate. As the screw drives the conveying ring to rotate synchronously and continuously, the product is repeatedly blocked and passed through in the desulfurization section with the cooperation of the sealing block and the conveying ring. If the temperature continues to rise and reaches the maximum critical temperature value, the limiting column moves to the connection position between the straight groove and the inclined groove. As the sealing disc continues to move, the limiting column enters the inclined groove. Under the guidance of the inclined surface of the inclined groove, the limiting column drives the connecting plate and multiple push rods to move synchronously towards each other. The push rods drive the sealing blocks to move towards each other. Since the through groove is set with an inverted trapezoidal opening, when the sealing block moves, its overlapping area with the through groove gradually decreases, which makes the conduction area of ​​the through groove gradually increase, thus reducing the flow resistance of the product in the desulfurization section.

2. The energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production line according to claim 1, characterized in that, The screw is connected to equidistant barrier discs, and the barrier discs are formed with staggered feeding grooves.

3. The energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production line according to claim 1, characterized in that, The cooling control mechanism includes a fixed plate connected inside the temperature control tube. The fixed plate has a plurality of first arc-shaped grooves that are equidistantly distributed around its circumference. The cooling tube is connected to the fixed plate and communicates with the first arc-shaped grooves. It also includes a rotating assembly and a conducting assembly disposed on the fixed disk and connected to the sealing disk.

4. The energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production line according to claim 3, characterized in that, The rotating assembly includes a plurality of support sleeves rotatably mounted on the fixed disk and equidistantly distributed around the circumference. A support rod connected to the sealing disk is axially slidably connected to the support sleeve. A guide groove is formed on the outer circumference of the support rod. A limiting block that slidably engages with the guide groove is connected to the inner wall of the support sleeve. A spring is installed inside the support sleeve, and the two ends of the spring abut against the support rod and the fixed disk, respectively.

5. The energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production line according to claim 4, characterized in that, The conductive assembly includes a conveying pipe connected to the fixed plate and sealed to the support sleeve, and the end of the conveying pipe has a second arc groove that is conductively engaged with the first arc groove.

6. The energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for reclaimed rubber production line according to claim 5, characterized in that, The conveying pipe is rotatably sealed with a first transfer pipe and a second transfer pipe. The first transfer pipe and the second transfer pipe are respectively connected to an inlet pipe and an outlet pipe. The conveying pipe has a conveying hole that communicates with the first transfer pipe. The cooling pipe is connected to the second transfer pipe.

7. A production method for an energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line, comprising the energy-saving and environmentally friendly low length-to-diameter ratio single-screw low-temperature desulfurization equipment for a reclaimed rubber production line as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Add the raw material into the feed pipe through the feed hopper, and guide the raw material to flow axially along the feed pipe under the action of the screw; Step 2: As the screw rotates, the raw materials are heated, melted, and mixed, and then transported to the desulfurization section. At this time, the temperature of the raw materials can be monitored. Step 3: When the temperature rises, it drives the sealing disc to move, thereby adjusting the conduction state of the cooling pipe through the cooling control mechanism, so that the raw material always maintains the desulfurization temperature; Step 4: When the temperature exceeds the set value and the cooling pipe reaches its maximum conductivity, the sealing disc drives the desulfurization adjustment mechanism to move, thereby accelerating the screw's conveying rate of raw materials through the desulfurization adjustment mechanism.

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